No additional library is necessary.
Here is the procedure to install Exonerate from source code:
/home/bioubuntu and the resulting folder moved to /opt/bio/sources/./opt/bio/sources/exonerate-2.2.0 folder should belong to root and its permissions set to 755.% sudo chown -R root:root /opt/bio/sources/exonerate-2.2.0
/opt/bio/sources/exonerate-2.2.0, compilation is easily done:% sudo ./configure && sudo make
% sudo ln -s /opt/bio/sources/exonerate-2.2.0/src/program/exonerate /usr/local/bin/exonerate